E90Post
 


European Auto Source
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Jb4 increase has mileage



Reply
 
Thread Tools Search this Thread
      05-10-2012, 10:28 AM   #1
Sandeepgill2011
Private
 
Drives: BMW 335xi downpipes and colair
Join Date: Apr 2012
Location: Roseville

Posts: 52
iTrader: (1)

Jb4 increase has mileage

I have a 335xi and am
Going to install a jb4. Will it increse the gas mileage if I'm
Driving normally??
Sandeepgill2011 is offline  
0
Reply With Quote
      05-10-2012, 10:34 AM   #2
benzy89
Banned
 
Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ

Posts: 2,396
iTrader: (3)

Garage List
2008 BMW 335i  [3.75]
I've seen an increase in my mileage since installing my tune. I do a lot of highway driving so I think the engines not working as hard when I get up to speed/pass people.

Chances are any extra miles you would get will get cancelled out since you'll just be standing on the gas all the time
benzy89 is offline   United_States
0
Reply With Quote
      05-10-2012, 10:42 AM   #3
rader1
Banned
 
Drives: Cobb Stage 2+ 135i
Join Date: Apr 2011
Location: Roanoke, VA

Posts: 2,197
iTrader: (0)

Quote:
Originally Posted by benzy89 View Post
I've seen an increase in my mileage since installing my tune. I do a lot of highway driving so I think the engines not working as hard when I get up to speed/pass people.

Chances are any extra miles you would get will get cancelled out since you'll just be standing on the gas all the time
+1
Any fuel mileage increase will be offset by how much fun it is to hammer the throttle... *sigh* sometimes I wish I could recreate the magic of the first time I drove the car with a proper tune...
rader1 is offline  
0
Reply With Quote
      05-10-2012, 10:56 AM   #4
Sandeepgill2011
Private
 
Drives: BMW 335xi downpipes and colair
Join Date: Apr 2012
Location: Roseville

Posts: 52
iTrader: (1)

Hahaha lol. Can't wait to put this baby on! It's seems so good to be true 100hp. Do any of u guys know what it exactly it does give that much hp?
Sandeepgill2011 is offline  
0
Reply With Quote
      05-10-2012, 12:39 PM   #5
CyberNate
New Member
 
Drives: 2009 335i Sedan
Join Date: Mar 2012
Location: Sunnyvale, CA

Posts: 9
iTrader: (1)

The tune simply boosts the turbo to higher level. More air and fuel provided to the engine which results in more power.
CyberNate is offline  
0
Reply With Quote
      05-10-2012, 12:44 PM   #6
Pave Dew
Captain
 
Drives: F20 M135i auto EB2
Join Date: Jun 2010
Location: SW London

Posts: 738
iTrader: (3)

Send a message via Skype™ to Pave Dew
Hi,

I have a procede p/back on my E91 335i 6MT here in the UK and with it on map 2 my fuel economy has dipped by 10% on urban / highway commute.

If I want to conserve fuel, map 0 is stock.

Once you have sampled the fun that boosted maps 1 and 2 bring though you won't be in map 0 v often after that......

Pave
Pave Dew is offline   United Kingdom
0
Reply With Quote
      05-10-2012, 01:32 PM   #7
rader1
Banned
 
Drives: Cobb Stage 2+ 135i
Join Date: Apr 2011
Location: Roanoke, VA

Posts: 2,197
iTrader: (0)

Quote:
Originally Posted by Sandeepgill2011 View Post
Hahaha lol. Can't wait to put this baby on! It's seems so good to be true 100hp. Do any of u guys know what it exactly it does give that much hp?
You're not going to see a tune only give you an increase of 100hp, the average tune will bump power by about 50hp. It's still a world of difference.
rader1 is offline  
0
Reply With Quote
      05-10-2012, 01:36 PM   #8
benzy89
Banned
 
Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ

Posts: 2,396
iTrader: (3)

Garage List
2008 BMW 335i  [3.75]
Quote:
Originally Posted by rader1 View Post
You're not going to see a tune only give you an increase of 100hp, the average tune will bump power by about 50hp. It's still a world of difference.
Yea, a tune isnt going to magically free up an additional 100hp. At the wheels you'll go from 280 to about 320 (40 WHP gain) and from 295 to 340 (45 WTQ). From there you might be able to free up 5-10 more horses/tq with an intake, but there's no way you'll go over 330/350 with a tune setup that won't blow up your engine/turbos.
benzy89 is offline   United_States
0
Reply With Quote
      05-10-2012, 02:26 PM   #9
E90Company
Major General
 
E90Company's Avatar
 
Drives: Car
Join Date: Mar 2012
Location: FL

Posts: 6,140
iTrader: (2)

Quote:
Originally Posted by benzy89 View Post
Yea, a tune isnt going to magically free up an additional 100hp. At the wheels you'll go from 280 to about 320 (40 WHP gain) and from 295 to 340 (45 WTQ). From there you might be able to free up 5-10 more horses/tq with an intake, but there's no way you'll go over 330/350 with a tune setup that won't blow up your engine/turbos.
Are you positive? I thought it was more than that.
E90Company is offline   No_Country
0
Reply With Quote
      05-10-2012, 02:38 PM   #10
135er
Private First Class
 
Drives: 135i
Join Date: Mar 2012
Location: montreal

Posts: 127
iTrader: (0)

^^^this is to the wheels obviously. I think you have to add 15-20% more to calculate to the crank.

Someone correct me if i am wrong.
135er is offline  
0
Reply With Quote
      05-10-2012, 02:48 PM   #11
benzy89
Banned
 
Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ

Posts: 2,396
iTrader: (3)

Garage List
2008 BMW 335i  [3.75]
Quote:
Originally Posted by E90Company View Post
Are you positive? I thought it was more than that.
Quote:
Originally Posted by 135er View Post
^^^this is to the wheels obviously. I think you have to add 15-20% more to calculate to the crank.

Someone correct me if i am wrong.
This is AT WHEEL horsepower/torque estimates, which are really the only ones that matter. You might be seeing 75hp/80tq gains at the flywheel, but you lose some of that power as it gets sent through the drivetrain, rear axle & finally to the wheels.

Don't worry, there's still going to be a night & day difference when you accelerate the car after you install the tune. I was shocked when I put my COBB Stage 1 on & the difference in the power. Now I'm addicted to getting more power out of my N54 -- Just ordered VRSF DPs & about to buy a Helix FMIC so I can run Stage 2, no Meth for me though.

Last edited by benzy89; 05-10-2012 at 03:10 PM.
benzy89 is offline   United_States
0
Reply With Quote
      05-10-2012, 02:55 PM   #12
benzy89
Banned
 
Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ

Posts: 2,396
iTrader: (3)

Garage List
2008 BMW 335i  [3.75]
Put it in perspective: A FBO 335i, that's a tune, Intake, DPs and FMIC, is prob making 395-400 wheel HP/415-420 wheel tq. That's without meth, nitrous and the OEM turbos.

So if you're looking to make 350 HP/360 TQ on just a tune you're gonna burn out your engine/turbos from putting too much stress on them. You need those supporting mods to get the power to the mid/upper 300s

Last edited by benzy89; 05-10-2012 at 03:10 PM.
benzy89 is offline   United_States
0
Reply With Quote
      05-10-2012, 03:04 PM   #13
rooringhusky
Objects in the mirror are losing
 
rooringhusky's Avatar
 
Drives: 2007 BMW 335i E92 AW/CR 6MT
Join Date: Mar 2011
Location: Socal (OC/Riverside)

Posts: 984
iTrader: (12)

Garage List
2007 BMW 335i  [5.00]
Ooops you already replied and addressed this! My bad!
__________________
PERFORMANCE: JB4 G5 \ Backend Flash \ DCI \ BMS Downpipes \ CX FMIC \ ER Chargepipe \ Synapse BOV \ KW V2 \ Muffler Delete \ CDV \ ZHP Shifter \ Cyba Scoops
FUN: M3 Front \ Mtech Rear \ JL 10W6 \ ModMyNav \ V1 Hardwired \ LUX H8 \ Gloss Black Trim \ Gloss Black Roof \ Cyba Quads \ Cyba Mtech Diffuser
rooringhusky is offline   United_States
0
Reply With Quote
      05-10-2012, 03:21 PM   #14
rongomer
boom
 
rongomer's Avatar
 
Drives: 335xi
Join Date: Apr 2011
Location: Varies

Posts: 598
iTrader: (6)

Never dynoed it stock so I can't be sure, but I'm thinking JB4+Map7+Race Gas in my car was good for 90-100whp.

1/4 Mile Stock Full Weight: 13.6 @ 103
1/4 Mile JB4+Map 7 + Race Gas Full Weight: 12.031 @ 114.72

Most of the ET is from full power in 1st and 2nd, but the trap is what tells the story.
rongomer is offline  
0
Reply With Quote
      05-10-2012, 03:22 PM   #15
rongomer
boom
 
rongomer's Avatar
 
Drives: 335xi
Join Date: Apr 2011
Location: Varies

Posts: 598
iTrader: (6)

Oh and my gas mileage sucks, but it's because of how I drive
rongomer is offline  
0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 07:06 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST